AquaMaxx offers a variety of benefits with their new line of DC Pumps manufactured by Sunpole. VSG pumps can either be used with external of submersible applications. They also include a feature known as a closed-loop impeller; which allows for much higher pressure applications that can push the water up to 16 feet. With the included smart controller, the hobbyist is able to adjust the water flow from 10% to 100% for feeding times or cleaning times. With the added benefits of super build quality which incorporates such benefits as titanium screws, nearly completely silent operation, ABS plastic construction, and rotor shafts and bearings made of high quality ceramic, it's no wonder why these pumps have become one of our top sellers here at AquariumSumps.com. Please contact us if you would like further information about these exceptional pumps.